AFAIK he has not adopted them. Their dad would have to approve it, and although he is so stupid and so neglectful that he allows his kids to live full-time in a house with ZJ, I doubt their bio dad would sign away his parental rights to that degenerate. Also, at least as I understand it, once kids are old enough to be fairly cognizant, judges will usually ask them about their prospective adoptive parent and whether or not they are good with this person becoming their parent, and just a hunch but it seems more likely the boys would use that opportunity to spill the beans regarding just what goes in that small house and plead for the judge to rescue them rather than tell the judge they'd just love for Zack to be their new so-called second "mom" or whatever it is Zack claims to be.But has Zach actually adopted either of them? I've seen him very rarely claim to be a step-parent, but adoption? Probably not.